水稻节水保护性耕作的土壤理化性状及产量效应研究

通过对常规耕作和水稻节水保护性耕作的土壤理化性状、土壤酶、秸秆分解率及产量的比较分析,结果表明,水稻节水保护性耕作能降低土壤容重、增大土壤孔隙度、提高土壤速效养分,过氧化氢酶、酸性磷酸酶和脲酶活性分别比常规耕作高5.39%、14.52%、8.33%,蔗糖酶活性比常规低32.82%,表层、全耕层、深层秸秆粗分解率分别比常规耕作高11.71%、4.96%和9.10%,最终产量比常规耕作提高21.34%。

河南省水资源开发利用现状与节水保护

河南省境内水资源与东部及南方省份相比相对较为匮乏,尽管河南省境内分布着黄河干流和众多的长江支流但是由于河南省境内人口众多致使可供利用的水资源相对较少。为实现河南省的健康稳定发展需要积极做好河南省境内水资源的分布调查,并对水资源的开发利用制定详细、合理的开发方案,实现水资源利用效率的最大化,此外,在做好水资源合理开发利用的同时还应积极做好水资源的节水保护。

保护性耕作节水技术效益分析与探讨

介绍了河北省廊坊市保护性耕作节水技术的实施背景,阐述了实施内容、实施效果、管理经验,针对实施过程中存在的问题,提出了促进保护性耕作节水技术推广应用的对策与建议。

水田保护性节水少耕技术研究

水田土壤易沉实板结，耕层水分饱和，空气被排除，呈还原状态，当秋季排水落干后充满空气时，又呈氧化状态。这样反复循环形成一种特殊的物理、化学、生物学过程，使稻田土壤在物质的转化和移动、养分的保持与释放等方面，都与一般旱田土壤不同。针对稻田土壤的上述特点和传统耕作方法的弊端，我们试验了一种新的稻田耕作栽培技术——水田保护性节水少耕栽培技术。

CONSTRAINING FACTORS TO SUSTAINABLE UTILIZATION OF WATER RESOURCES AND THEIR COUNTERMEASURES IN CHINA

This paper discusses the constraining factors to sustainable utilization ofwater resources in China, and the countermeasures to realize sustainable water utilization. Theresult of comprehensive analysis shows that constraining factors to sustainable utilization of waterresources in China are complicated, including physical geographical factors and socio-economicfactors, such as uneven distribution of water resources at temporal and spatial scales,inappropriate institutional arrangement and non-water-saving and non-wter-conservation productionand life mode. The countermeasures against constraining factors to water resources sustainabledevelopment are put forward as follows: 1) using wetlands and forests, and through spatialconversion to realize temporally sustainable supply of water resources; 2) transferring waterbetween basins and areas and developing various water resources in water shortage area; 3)establishing water-saving society; 4) strengthening water pollution control and water resourcesprotection; and 5) establishing unified water resources management mechanism.

基于中国水资源管理制度的分析

中国人均淡水资源占有水平低,水资源时空分布不均衡,水资源紧缺与快速发展的经济使水资源供需矛盾进一步加剧,在部分地区水资源已成为制约经济发展的主要因素。为了缓解水资源供需矛盾,政府部门对水资源管理采取了一系列措施,一定程度上缓解了供需矛盾,但不断变化的发展形势对水资源管理工作提出了更高的要求。作者旨在对水资源管理现状进行分析、研究,提供一些措施供水资源管理部门决议开拓多一点思路。

绿色施工技术在高档次住宅楼施工中的应用

为适应绿色施工的形势需求,施工企业在保证整个工程质量和安全的同时,必须加强现场及周边地区环境保护,加大施工用电用水等节能节约的管理力度。这些施工技术在大城市闹市中心区域工程施工中尤为重要。

科学规划供水水源 加强城市供水管理

供水生产是城市的基础产业，科学规划供水水源，合理进行调度管理，对于城市发展是至关重要的。即墨市是山东半岛的严重缺水城市，在这方面做了大量的工作，从加强水资源管理、科学制定城市供水规划入手。顺应市场经济发展要求，及时进行水务一体化管理，从原水生产到用水户，加强各个环节的管理，实行定额用水、计划用水、节约用水，同时加强水源地保护工作，并取得了显著成效，为缺水城市水务管理探索出了一条新路子。

Contribution to the Study of Aquatic Macrophytes from Musura Bay （Danube Delta, Romania）

Danube Delta--a unique, young and continuing growing region, is a favorable place for developing a unique flora and fauna with many rare and protected species in Europe. Even though the terrestrial environment is present in the area, the predominance of the aquatic environment led to the existence of a particular macrophytic flora. At the contact point of the sea-water and freshwater, physical, chemical and biological processes occur. As a consequence, researchers consider these coastal waters special ecosystem, in which Musura bay is the most representative one. The purpose of this paper is to contribute to the study of aquatic submerged and floating macrophytes. The present study took place over two years （2013-2014）. In each year, a number of expeditions were made in different seasons in order to observe the diverse flora and flora associations. This due to seasonal variation in water quality, and might be a significantly seasonality of the vegetation also. The importance of the studies regarding flora of the Danube Delta, consist in the fact that the plants in this area are of social and economical importance, but also very important for environmental conservation.

杭州市科技馆绿色施工方案

通过实施国家绿色建筑设计标识三星级项目——杭州市科技馆工程,探讨通过合理的施工组织设计,完善管理制度,运用绿色施工的理念和技术,来实现在工程建造过程中的低碳、节能和环保。